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// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package cmd
import (
"fmt"
"os"
"reflect"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"github.com/urfave/cli/v2"
)
// cmdHelp is our own help subcommand with more information
func cmdHelp() *cli.Command {
c := &cli.Command{
Name: "help",
Aliases: []string{"h"},
Usage: "Shows a list of commands or help for one command",
ArgsUsage: "[command]",
Action: func(c *cli.Context) (err error) {
args := c.Args()
if args.Present() {
err = cli.ShowCommandHelp(c, args.First())
} else {
err = cli.ShowAppHelp(c)
}
_, _ = fmt.Fprintf(c.App.Writer, `
DEFAULT CONFIGURATION:
AppPath: %s
WorkPath: %s
CustomPath: %s
ConfigFile: %s
`, setting.AppPath, setting.AppWorkPath, setting.CustomPath, setting.CustomConf)
return err
},
}
return c
}
var helpFlag = cli.HelpFlag
func init() {
// cli.HelpFlag = nil TODO: after https://github.com/urfave/cli/issues/1794 we can use this
}
func appGlobalFlags() []cli.Flag {
return []cli.Flag{
// make the builtin flags at the top
helpFlag,
cli.VersionFlag,
// shared configuration flags, they are for global and for each sub-command at the same time
// eg: such command is valid: "./gitea --config /tmp/app.ini web --config /tmp/app.ini", while it's discouraged indeed
// keep in mind that the short flags like "-C", "-c" and "-w" are globally polluted, they can't be used for sub-commands anymore.
&cli.StringFlag{
Name: "custom-path",
Aliases: []string{"C"},
Usage: "Set custom path (defaults to '{WorkPath}/custom')",
},
&cli.StringFlag{
Name: "config",
Aliases: []string{"c"},
Value: setting.CustomConf,
Usage: "Set custom config file (defaults to '{WorkPath}/custom/conf/app.ini')",
},
&cli.StringFlag{
Name: "work-path",
Aliases: []string{"w"},
Usage: "Set Gitea's working path (defaults to the Gitea's binary directory)",
},
}
}
func prepareSubcommandWithConfig(command *cli.Command, globalFlags []cli.Flag) {
command.Flags = append(append([]cli.Flag{}, globalFlags...), command.Flags...)
command.Action = prepareWorkPathAndCustomConf(command.Action)
command.HideHelp = true
if command.Name != "help" {
command.Subcommands = append(command.Subcommands, cmdHelp())
}
for i := range command.Subcommands {
prepareSubcommandWithConfig(command.Subcommands[i], globalFlags)
}
}
// prepareWorkPathAndCustomConf wraps the Action to prepare the work path and custom config
// It can't use "Before", because each level's sub-command's Before will be called one by one, so the "init" would be done multiple times
func prepareWorkPathAndCustomConf(action cli.ActionFunc) func(ctx *cli.Context) error {
return func(ctx *cli.Context) error {
var args setting.ArgWorkPathAndCustomConf
ctxLineage := ctx.Lineage()
for i := len(ctxLineage) - 1; i >= 0; i-- {
curCtx := ctxLineage[i]
if curCtx.IsSet("work-path") && args.WorkPath == "" {
args.WorkPath = curCtx.String("work-path")
}
if curCtx.IsSet("custom-path") && args.CustomPath == "" {
args.CustomPath = curCtx.String("custom-path")
}
if curCtx.IsSet("config") && args.CustomConf == "" {
args.CustomConf = curCtx.String("config")
}
}
setting.InitWorkPathAndCommonConfig(os.Getenv, args)
if ctx.Bool("help") || action == nil {
// the default behavior of "urfave/cli": "nil action" means "show help"
return cmdHelp().Action(ctx)
}
return action(ctx)
}
}
func reflectGet(v any, fieldName string) any {
e := reflect.ValueOf(v).Elem()
return e.FieldByName(fieldName).Interface()
}
// https://cli.urfave.org/migrate-v1-to-v2/#flag-aliases-are-done-differently
// Sadly v2 doesn't warn you if a comma is in the name. (https://github.com/urfave/cli/issues/1103)
func checkCommandFlags(c any) bool {
var cmds []*cli.Command
if app, ok := c.(*cli.App); ok {
cmds = app.Commands
} else {
cmds = c.(*cli.Command).Subcommands
}
ok := true
for _, cmd := range cmds {
for _, flag := range cmd.Flags {
flagName := reflectGet(flag, "Name").(string)
if strings.Contains(flagName, ",") {
ok = false
log.Error("cli.Flag can't have comma in its Name: %q, use Aliases instead", flagName)
}
}
if !checkCommandFlags(cmd) {
ok = false
}
}
return ok
}
func NewMainApp() *cli.App {
app := cli.NewApp()
app.EnableBashCompletion = true
// these sub-commands need to use config file
subCmdWithConfig := []*cli.Command{
CmdWeb,
CmdServ,
CmdHook,
CmdDump,
CmdAdmin,
CmdMigrate,
CmdKeys,
CmdConvert,
CmdDoctor,
CmdManager,
CmdEmbedded,
CmdMigrateStorage,
CmdDumpRepository,
CmdRestoreRepository,
CmdActions,
cmdHelp(), // the "help" sub-command was used to show the more information for "work path" and "custom config"
}
// these sub-commands do not need the config file, and they do not depend on any path or environment variable.
subCmdStandalone := []*cli.Command{
CmdCert,
CmdGenerate,
CmdDocs,
}
app.DefaultCommand = CmdWeb.Name
globalFlags := appGlobalFlags()
app.Flags = append(app.Flags, globalFlags...)
app.HideHelp = true // use our own help action to show helps (with more information like default config)
app.Before = PrepareConsoleLoggerLevel(log.INFO)
for i := range subCmdWithConfig {
prepareSubcommandWithConfig(subCmdWithConfig[i], globalFlags)
}
app.Commands = append(app.Commands, subCmdWithConfig...)
app.Commands = append(app.Commands, subCmdStandalone...)
if !checkCommandFlags(app) {
panic("some flags are incorrect") // this is a runtime check to help developers
}
return app
}
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